The exhaust, which is a mess of the factory manifold to downpipe, straight pipe where the cat was, and then welded to a stainless cat-back to a "turbo tuff" muffler was ridiculously loud, even for a dedicated rallycross car. In the original mossmotors kit for non-PS w/ AC, they included a newer ribbed pulley, and "t-bolt" which I will need to fabricate. It looks like these parts are impossible to find now, so I will have to machine the pulley through "t-bolt". So to make tensioner adjustments, you need to push down the pulley and then quickly tighten a lock nut on the tensioner bolt. However, it appears to be a cobbled together fix, where the through-pulley bolt which is supposed to be threaded is totally fixed and welded to the adjustment tensioner bolt.
#Best boost gauge for miata manual#
This is a manual non-power steering, with A/C, so it uses the factory tensioner. The belt tensioner is in sore need of an upgrade. The throttle cable was routed in a not so good way, binding and causing a sticky feeling pedal. The supercharger kit needs some attention. Right now, the supercharger makes decent boost, but during a gear change (when there is a speed difference in the pulleys) the belt slips momentarily.
I may try to pull one lift bracket off, and see how these unknown springs sit. For rallycross, a lift is really not needed, but this will stay for now as the lift brackets look fairly rusted in place. The "lift" is a Paco 3" lift kit, KYB GR2 struts that appear fairly new (not rusty), and some unknown blue springs. Going over the rust bucket in more detail (or as it's now known, the "crusty tuna can") revealed a few things.
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